Lap pin and calender rack



1952 F. HUNTER LAP PIN AND CALENDER RACK 2 SHEETS-SHEET 1 Filed Nov. 9,1946 FRED HUNTER jwumvboa'i Feb. 5, 1952- F, HUNTER 2,584,457

LAP PIN AND CALENDER RACK.

Filed Nov. 9, 1946 2 SHEETS-SHEET 2 FRED HUNTER Sid/UM Patented Feb. 5,1952 LAP PIN AND CALENDEB, RACK Fred Hunter, Lancaster, S. 0., assignorto Precision Gear & Machine Company, Charlotte, N. 0., a corporation ofNorth Carolina.

Application November 9, 1946, Serial No. 709,038

1 This invention relates to an improved lap pin having anti-frictionproperties and calender racks associated therewith to prevent the endsof the lap pin from rotating in the calender racks.

' Heretofore, a lap pin has usually been composed of a straight rod,onto which the lap of fibers is wound in a picker, and the 1ike,'and theends of this lap pin have been pressed downwardly by means of calenderracks, sometimes referred to" in thetrade as loggerheads. Theconventional calender racks have rollers therein and the ends of the lappin rotated in the hooked portions of the calender racks. This hasresulted in wearing of the ends of the lap pin and producing defectivelap rolls.

It is an object of this invention to provide a lap pin onto which a lapof fibers is wound with the lap pin comprising an elongated sleeve ontowhich the lap of fibers is wound and said sleeve being penetrated by arod whose ends project substantially beyond the ends of the sleeve, withball bearings disposed between the sleeve and the rod, whereby the rodwill remain stationary and the sleeve will rotate along with the laproll. This will result in the ends of the rod not rotating but beingheld stationary and in order to insure that the rod will not rotate, thecalender racks, instead of having roller bearings therein for engagingthe lap pin, have friction surfaces, such as a pad of leather, fabricand the like, to frictionally engage the ends of the rod to retardrotative movement thereof so that the sleeve will do the rotating andthe rod will remain stationary.

Some of the objects of the invention having been stated, other objectswill appear as the description proceeds, when taken in connection withthe accompanying drawings, in which Figure l is an elevation of myimproved lap view taken Referring more specifically to the drawings,

the numeral l indicates a sleeve. Penetrating Figure 2 is a longitudinalsectional view taken I cl ims. (Cl. 19 -162) the sleeve, and projectingfrom both ends thereof, is a shaft II which has a bore I2 extending fromone end thereof to near the handle end I3, saidbore l2 stopping at thepoint l4. Mounted on the rod H areraceways I6 and I! and mounted in theinsideiand at the end portions of the sleeve III are raceways l8 and i9,and between these raceways are disposed balls 20, and which balls 20 aresealed by annular fiat rings 2!, whereby the sleeve Hi will rotate "bymeans of the ball bearing relative to the rod ll since the sleeve has aninside diameter substantially greater than the rod II. The bore l2 inthe rod II is conventional in the old-style of lap pin and is for thepurpose of inserting a smaller pin in the bore l2 before the roll offibers is dofied from the lap pin so that the roll of fibers will bedoffed onto the smaller pin which 'will be used for handling purposes,while the lap pin proper will be reinserted in the picker for theformation of a new lap roll.

In Figures 5, 6 and 7 portions of a picker are shown, in which the framemembers 25 and 26 have mounted therein suitable calender rolls 2'! and28 on which the lap roll 29 is adapted to be formed. In a picker of thistype there are calender racks 30 and 3! whose lower ends have a rackthereon, each of which is engaged by a pinion, not shown, which arecontrolled by the picker for moving the calender racks upwardly inproportion to the diameter of the roll as it is being formed. Theseold-style calender racks had a hooked portion 33 at the top thereof inwhich rollers were mounted for contacting the ends of the lap pin andthe lap pin rotated in the calender racks.

In the present form of the invention there is secured in the hooked'portion of each of these calender racks a fiat piece of frictionmaterial 35, such as leather, which contacts the end of the shaft I I,and this tends to prevent rotation of the shaft H to thus permit thesleeve H] to rotate relative to the shaft I I while the shaft H remainsstationary.

It is thus seen that I have provided an improved lap pin in which thelap receiving portion rotates but which portion is rotatably mounted ona shaft which is engaged by friction material disposed in the calenderracks to prevent rotation of the shaft but permitting rotation of thesleeve mounted on the shaft and said sleeve having sealed ball bearingsso as to provide for easy running and long life.

In the drawings and specification there has been set forth a preferredembodiment of the invention, and although specific terms are employed,they are used in a generic and descriptive sense only, and not forpurposes of limitation, the scope of the invention being defined in theclaims.

I claim:

1. In a picker having calender rolls and a pair of calender racks forengagement with a lap pin onto which a lap of fiber is Wound forpressing the lap of fibers against the calender rolls, said lap pincomprising a shaft having its ends, extending beneath the calenderracks, each of the calender racks having friction material therein forengaging the shaft and exerting downward pressure on the same, said.shaft being surrounded by a sleeve member having a greater insidediameter than the outside diameter of the shaft, a ball bearing disposedbetween each end 4 inner surface of the sleeve member and the exteriorof the elongated member.

, 3. A lap pin for pickers comprising a shaft, 3.

sleeve member surrounding an intermediate porof the sleeve and the shaftwhereby the sleeve anti-friction bearings disposed between the tion ofthe shaft and adapted to receive a lap of fibers, the inside diameter ofthe sleeve being substantially greater than the outside diameter of theshaft, anti-friction bearings disposed between the shaft and theends ofthe sleeve member, said shaft having a longitudinally extending boreextending from one end thereof for a distance greater than the length ofthe sleeve but stopping short of the other end of the shaft forreception of a smaller pin.

FRED HUNTER.

REFERENCES CITED The following references are of record in the fileof'this patent:

- UNITED STATES PATENTS

